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A Sustainable Alternative for Green Structural Lightweight Concrete: Performance Evaluation.
1Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia.
Materials (Basel, Switzerland)
|December 11, 2022
Summary
This study developed sustainable structural lightweight concrete using plastic waste. Optimized plastic aggregates were identified, showing potential for eco-friendly construction materials meeting industry standards.
Area of Science:
- Materials Science
- Civil Engineering
- Environmental Science
Background:
- Structural lightweight concrete offers higher strength-to-density ratio, reducing structural element loads.
- Growing environmental concerns necessitate sustainable alternatives in the concrete industry.
Purpose of the Study:
- To develop a sustainable approach for producing structural lightweight concrete using plastic waste.
- To optimize manmade plastic aggregates and evaluate their performance in concrete.
Main Methods:
- Selection of optimized plastic aggregates through trial concrete mixes.
- Evaluation of physical, mechanical, and durability properties of concrete with varying aggregate replacement levels.
Main Results:
- Two aggregate series (70% DS-30% LLDPE and 50% QF-50% PET) were selected.
- Concrete properties generally decreased with increased plastic aggregate content.
- Specific aggregate combinations at 25% and 100% replacement met ASTM C330/C330M-14 standards for structural lightweight concrete.
Conclusions:
- The study successfully demonstrated the utilization of plastic waste for sustainable structural lightweight concrete.
- Optimized plastic aggregates offer a viable solution for eco-friendly construction materials.
- Selected aggregate combinations provide options for varying strength and durability requirements.
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